Advanced Instruments 4250, User Manual

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instrument care and troubleshooting. If this information does not solve
your problem, call the appropriate number below.
• 800-225-4034 (toll-free within the USA and Canada; after
normal business hours, dial extension 2191)
• +US 781-320-9000 (elsewhere)
• 781-320-0811 (fax)
If you purchased your instrument outside of the U.S. or Canada, please
contact your Advanced Instruments authorized dealer for service or
repair.
When contacting our service personnel, please have ready the model
and serial numbers from the label on the back of your instrument, your
user’s guide or service manual, and the symptoms of your problem. You
should use a telephone as close to your instrument as possible to facili-
tate making recommended diagnostic checks. If you need to order parts
or service, a purchase order from your purchasing agent will be neces-
sary.
After Hot-Line diagnosis, your service technician may assist you in
making minor repairs over the phone, providing you with recommended
parts (or part numbers), or may have you ship your instrument for facto-
ry repair.
To return an instrument for repair or replacement:
1. Notify our service department to obtain an RMA (Returned Material
Authorization).
CAUTION The heat transfer liquid contains hazardous chemicals.
Consult the material safety data sheet (MSDS) and use
appropriate personal protective equipment.
2. Open the heat transfer fluid compartment in the front of the instru-
ment. Remove the smaller plastic tube from the heat transfer fluid
container; temporarily leave the larger plastic tube in the heat trans-
fer fluid container.
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Troubleshooting & Service